    New chain ID            Original chain ID

9yjv_1-pdb-bundle1.pdb:
           A                         A
           B                         B
           C                         C
           D                         D
9yjv_1-pdb-bundle2.pdb:
           A                         D
           B                         E
           C                         F
           D                         G
           E                         H
9yjv_1-pdb-bundle3.pdb:
           A                         H
